Abstract
References
1.
Alvarez
W C
Freedlander
B L
(1924 ) J. Amer. med. Ass.
83 , 576
2.
Green
D A
Jewell
P A
(1965 ) Brit. vet. J . 121 , 83
3.
Halls
J
(1965 ) Proc. R. Soc. Med.
58 , 859
4.
Hoelzel
F
(1930 ) Amer. J. Physiol . 92 , 466